A TECHNIQUE FOR DISPLAYING THE ENTIRE NERVE BRANCHING PATTERN OF A WHOLE MUSCLE - RESULTS IN 10 CANINE POSTERIOR CRICOARYTENOID MUSCLES
A TECHNIQUE FOR DISPLAYING THE ENTIRE NERVE BRANCHING PATTERN OF A WHOLE MUSCLE - RESULTS IN 10 CANINE POSTERIOR CRICOARYTENOID MUSCLES
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DOI：
10.1002/lary.5541030204
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发表时间：
1993-02-01
期刊：
影响因子：
2.6
通讯作者：
SANDERS, I
中科院分区：
文献类型：
--
作者：
DRAKE, W;LI, YZ;SANDERS, I
犬环杓后肌（PCA）有三个功能不同的肌腹，这是解剖学和组织学证据。本研究试图使用改良的Sihler神经染色技术来确定10只狗每个肌腹的确切神经分支模式。结果以照片和示意性神经地图的形式呈现在这里，这些地图说明了以下几点。1. PCA内的最终终端分支对应于PCA的三个腹部; 2. PCA的初始神经分支通常由多个神经束组成，这些神经束在它们最终分支到三个腹部之前重新排列; 3.在同一动物内，神经分支模式存在巨大的可变性，包括双侧不对称性; 4.每个腹部内的末端分支可以是令人惊讶的复杂的，并且包含多个分支; 5. PCA的快速和缓慢收缩的腹部具有不同的末端分支模式。这些结果支持犬PCA分为三个不同的神经肌肉区室的功能细分。这种显微解剖技术对于研究喉肌的基本神经肌肉组织及其发育和病理变化是有用的。
There is anatomical and histological evidence for three functionally distinct muscle bellies in the canine posterior cricoarytenoid (PCA) muscle. This study attempted to define the exact nerve branching pattern to each muscle belly in 10 dogs using a modification of Sihler's neural staining technique. The results are presented here as photographs and schematic nerve maps which illustrate the following points. 1. the final terminal branches within the PCA do correspond to the three bellies of the PCA; 2. the initial nerve branch to the PCA is usually composed of multiple fascicles which rearrange before their final branching to the three bellies; 3. there is tremendous variability of the nerve branching patterns including bilateral asymmetry within the same animal; 4. the terminal branching within each belly can be surprisingly complex and contain multiple anastomoses; 5. the fast- and slow-twitch bellies of the PCA have different terminal branching patterns. These results support the functional subdivision of the canine PCA into three distinct neuromuscular compartments. This microanatomical technique appears useful for studying the basic neuromuscular organization of laryngeal muscles and their developmental and pathological changes.